There have been rumors that King Charles had an affair with Sheila Ferguson, the middle singer of The Three Degrees. However, neither Ferguson nor Charles have ever confirmed or denied these rumors. Ferguson has said that she and Charles were friends, but that there was never anything romantic between them. Charles has also said that he and Ferguson were friends, but that he has “never commented on rumors about my private life.”

It is possible that King Charles did have an affair with Sheila Ferguson. However, there is no concrete evidence to support this claim. The rumors could simply be speculation or gossip.